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## Re: engraving rules question - voices with merged heads

 From: Michael Ellis Subject: Re: engraving rules question - voices with merged heads Date: Sat, 29 Jan 2011 16:18:47 -0500

I agree with James.  As I think I've commented in another thread, I've
seen many rehearsals interrupted when singers needed to ask a question
because of confusing notation.  Think of it this way: as a composer
you want to give the performers every possible chance to get it right
the first time so they can spend more time working on bringing your
music to life in performance.

Cheers,
Mike

>
> On Jan 29, 2011, at 9:40 PM, Janek Warchoł wrote:
>
>> W dniu 29 stycznia 2011 12:00:50 UTC+1 użytkownik James Bailey
>>>
>>> On Jan 29, 2011, at 11:25 AM, Janek Warchoł wrote:
>>>
>>>>>
>>>>> On Jan 29, 2011, at 12:17 AM, Janek Warchoł wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> recently i was told that this notation
>>>>>>
>>>>>>  { \mergeDifferentlyHeadedOn << b'2 \\ { b'8 a' g' f' } >> }
>>>>>>
>>>>>> is not allowed in vocal music (i.e., the noteheads shouldn't be
>>>>>> merged). Is that true?
>>>>>
>>>>> correct. you shouldn't merge heads in vocal music.
>>>>
>>>> Interesting. Is that true also when both voices have filled noteheads,
>>>> i.e.
>>>>
>>>>  { << { b'4 g' } \\ { b'8 a' g' f' } >> }
>>>>
>>>> ?
>>>> Here LilyPond merges noteheads automatically, and i don't remember any
>>>> simple means to switch that off.
>>>>
>>>> Thanks,
>>>> Janek
>>>
>>> This is different. One voice has a beam, while the other doesn't. There
>>> isn't any way to mistake a half note for a quarter note in this case, as is
>>> the case in the other.
>>
>> Sorry, but it doesn't make sense to me. In both examples one voice has
>> a beam and the other doesn't.
>> Please look at the attachments:
>> A - everything is clear. notes in upper voice must be quarters because
>> they have filled heads and no beams, while notes in lower voice must
>> be eights because they have filled heads and beams. Here we agree.
>> B - note in upper voice must be a half because it has a hollow
>> notehead and no beam. First note in lower voice has a hollow notehead,
>> but it cannot be a half because it has a beam. Therefore, it must be
>> an eight note. I don't see any way in which a half note could be
>> mistaken for a quarter note in this example.
>
> This is not normal vocal music engraving. This is more typical of piano
> music. I've seen this in piano music, and never in vocal music. Were I
> singing this, I'd understand what it meant, but it seems an unnecessary
> complication. Vocal music engraving traditions stem from everything being
> sight read. I'd have to read this twice, or at least stumble over it once
> before I realized that it wasn't a half note for the lower voice.
>
>> The only case in which a half note could be mistaken for a quarter
>> note would be in C. I agree that merging heads in C would be totally
>> unacceptable.
>>
>> thanks,
>> Janek
>> <C.png><A.png><B.png>
>
>
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